[Feature Request] Support (deep) directory imports of rules

### Product Area

The "code-analyzer" CLI

### Your Need or Problem

Adding rule files one by one is time consuming and error prone (you can miss some or forget to remove old ones).

### Your Desired Solution

As well as being able to specify rule files one by one, add glob support so we can point it at `rulesets/**/*.xml`.

### Alternatives Considered

_No response_

### Additional Context (Screenshots, Files, etc)

_No response_

### Workaround

_No response_

### Urgency

Low